Linux market share is not tiny. Linux and UNIX have held a majority share of the server room for over a decade. Linux is very competitive in embedded devices. It is also making great strides on the consumer and business desktop, which includes laptops, notebooks and netbooks.

Let's start with netbooks, the area where Linux has made the biggest inroads. According to ABI Research Linux regained 32% of the netbook market in 2009 despite being next to impossible to find in brick and mortar stores. That number did not include systems sold in dual boot configurations with both Windows and Linux. On such systems Windows is still considered to be the default operating system.